I'm putting up a fountain in my yard and since I won't be leaving the water pump on 24/7 I plan to use mosquito dunks for larvae control. What I'm wondering is since the fountain is small and probably only holds 20 gallons or so of water if we get a down pour of rain should I put another tab in?
They are supposed to last 30 days, but I'm not sure how that works when a bunch of fresh water is added to the fountain.
They are supposed to last 30 days, but I'm not sure how that works when a bunch of fresh water is added to the fountain.
